Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Construction or agricultural-type vehicle
Reexamination Certificate
2006-03-28
2006-03-28
Novosad, Christopher J. (Department: 3671)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Construction or agricultural-type vehicle
C701S103000, C037S348000, C037S382000, C172S003000, C060S431000, C417S212000
Reexamination Certificate
active
07020553
ABSTRACT:
A machine body controller70A includes a modification control unit70Ab for computing a torque modification value based on detected signals from environment sensors75to83,and modifies a maximum absorption torque of a hydraulic pump controlled by a basic control unit70Aa. An engine controller70B includes a modification control unit70Bb for computing an injection modification value based on detected the signals from the environment sensors75to83,and modifies a fuel injection state of a fuel injection device14controlled by a basic control unit70Ba. The controllers70A,70B further include computation element altering units171, 181.A communication controller70C downloads alteration data obtained from an external terminal150to the computation element altering units171, 181,whereby corresponding computation elements contained in the modification control units70Ab,70Bb are altered. As a result, it is possible in any environments to approprately modify the maximum absorption torque of the hydraulic pump and the fuel injection state of the injection device, and to sufficiently develop the performance of a construction machine.
REFERENCES:
patent: 6183210 (2001-02-01), Nakamura
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patent: 4-203484 (1997-07-01), None
patent: 10-266881 (1998-10-01), None
Arai Yasushi
Hirata Toichi
Kowatari Yoichi
Nakamura Kazunori
Watanabe Hiroshi
Hitachi Construction Machinery Co. Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Novosad Christopher J.
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